Power Safety System Rules: Revisions effective in version 5.3

Revision 5.3 Power System Safety Rules

Safety Update

Why TransGrid are changing the Power System Safety Rules (PSSR)

2 /

PSSR Revision 5.3 – 2017, incorporates key changes that have

taken place since the introduction of Revision 5.2 in 2014.

The PSSRs are no different to all other elements of TransGrid’s

safety management system, in that they are subject to periodic

review frequencies and a desire for continual improvement. The

need for revision and the publication of this document, is the

culmination of a number of elements including but not limited to:

• Feedback from and consultation with frontline staff that use

the Rules on a daily basis; and

• Recommendations regarding rule changes that were

determined through the review of incidents, hazards and near

misses

Power System Safety Rules, Revision 5.3 Updates

Why TransGrid are changing the Power System Safety Rules (PSSR)

3 /

The purpose of TransGrid’s PSSR has never changed.

Safety remains our highest priority, with the PSSR being our core

document when managing electrical risks for our authorised

staff and contractors.


When will the changes happen?

4 /

• Revision 5.3 of the PSSR is effective from Monday 28 August

2017

• The PSSR and its associated documents can be downloaded

from transgrid.com.au


https://www.transgrid.com.au/what-we-do/health-safety/power-system-safety-rules/Pages/default.aspx


How do I know if there are changes

5 /

All significant new additions and alterations to Revision 5.2 have been highlighted in this version

by a vertical sidebar.

The following slides highlight the major changes

A full list of the changes can be found on page 86 of the PSSR


Administrative and General Rule Changes

6 /

Purpose statement updated



7 /

Responsibilities updated to

reflect current organisational

structure

Training and Competency

clause updated to refer to a

broader range of pre-requisite

requirements and define a time

limit for use of instructed

persons



8 /

Limited Entry Provision

updated to reflect current

businesses processes

In numerous locations within

the Rules the word ‘clearance’

has been replaced by ‘Safe

Approach Distance’



9 /

Personal protective equipment

clause aligned with TransGrid’s

HSE procedures



10 /

Work involving apparatus of

other organisations point (c)

updated to make the

requirements applicable to all

categories of work



11 /

The Authorisations table has been revised:

• Category 1 is no longer a mandatory pre-

requisite for categories 6, 7 and 8

• Addition of category 4.0

• and removal of category 7.6 (unused)



12 /

Attachment B: Safe Approach

Distances Table revised including:

• General layout

• SAD for Extra Low Voltage and

Low Voltage revised to current

work practices

• SAD for Vehicles added

NOTE: Safe Approach Distances to

High Voltage have not changed


SAFE APPROACH DISTANCES

Dis

tan

ce

(m)

Persons No contact 0.25 (250mm)

Persons Insulated contact Insulated contact

Nominal Voltage (V): ELV <50V AC or <120V DC LV >ELV and <1000V AC or <1500V DC

11-33 66 132 220 275 330 500Nominal Voltage (kV):

Persons 0.7 1.0 1.2 1.8 2.3 3.0 3.9

Mobile Plant 3.0 3.0 3.0 6.0 6.0 6.0 8.0

Mobile Plant + 1.2 1.4 1.8 2.4 3.0 3.7 4.6

+

Persons + = Persons authorised 4.1, 4.3, 5.5, 6.5 or instructed persons directly supervised by a 4.1, 4.3 or 5.5

Mobile Plant + = Mobile plant operating with restrictive devices applied or an authorised safety observer appointed

Vehicles * 0.7 1.0 1.2 1.8 2.3 3.0 3.9

Dis

tan

ce

(m)

Vehicles * = Includes mobile plant stowed for transit

Updates to Definitions

13 /

Definition of Extra Low Voltage

(ELV) updated

Definition of Low Voltage (LV)

updated

Definition of mobile plant updated


Updates to Definitions

14 /

EME Guide added, Site

Management Book removed

Defined terms ‘Prohibited Access

Zone’ and ‘Radio Frequency

Worker Access Zones’ replaced by

terms ‘Exclusion Zone – Red’ and

‘Exclusion Zone – Yellow’


Category specific changes

Power System Safety Rules, Revision 5.3 Updates 15 /

There are no changes to Categories 1 and 2

Category 3 specific changes

16 /

Opening paragraph of Work in

Substations – General updated to

clarify that: High Voltage Areas are

included in the scope of category 3

Opening paragraph of 3.1 updated

to confirm this category is only for

work not affecting substation

apparatus



17 /

Wording of Substation Hazard 4

updated


updated


updated



18 /

Rule 3.2 updated to specifically

exclude category 3.2 people from

supervising instructed persons

Rule 3.3.3 updated to clarify that

only unplanned earth grid

breakages need to be repaired on

the same day



19 /

Title of Rule 4.3.2 (a) updated to

provide clarity on its purpose

Rule 4.3.2 (b) updated with

additional requirements



20 /

Rule 5.1.3 Updated to reinforce the

requirement to enter and leave a

Designated Work Area using the

approved entrance


Do Not Opertate

Do N

ot Opertate

Do Not Opertate

Do

Not

Ope

rtate

Access Authority Access Authority









Do Not Opertate

Do Not Opertate

All persons working

under a HV Access

Authority shall:

(a) Participate in a pre-

work risk assessment;

(b) At the start of each

day or shift, or upon

returning after leaving

site, sign on the HV

Access Authority

to indicate that they

understand the

warnings/

demonstrations given

and their responsibilities

under

the HV Access

Authority;


21 /

Rule 5.2 (n) revised to remove the

discretionary use of bonding leads



22 /

Rule 5.5.5 (b) updated with the

requirement for earth bridging

leads to be locked



23 /

Rule 5.6.3 revised and approved

earthing methods are now

included in the supporting

document

Rules 5.6.8 and 5.6.9 reworded to

improve clarity and the approval

requirements for defeating

interlocks changed to reflect

business processes



24 /

Rule 6.1 updated to allow category

6.1 people to supervise instructed

persons

Rule 6.1.2 updated with reference

to Dial before you Dig



25 /

New Rule 6.1.4 added ‘Work on

earthing systems’



26 /

Rule 6.3 (k) revised to remove the


Rule 6.3 (m) revised to include

multiple work locations

Rule 6.4.1 (c) ii ‘aerial conductor’

wording changed to ‘HV

conductor’



27 /

New Rule 6.3.6 added for Bridging

of Earthing Systems



28 /

Rule 7.1.2 removed and

requirements for Dial before you

Dig added to Cables Hazard 2

Rule 7.3 (k) revised to remove the


All references to Rule 7.6 have

been removed


E.L. 80.0m

E.L. 76.0m

E.L. 40.0m

E.L. 20.0m

E.L. 30.0m

E.L. 0.0m

OPTUS A1

TELSTRA A2

TELSTRA A3

TELSTRA A1

OPTUS A2

OPTUS A3

TELSTRA A4

TELSTRA A5

TELSTRA A6

TRANSGRID 1

TRANSGRID 2

TRANSGRID YAGI


29 /

‘Prohibited Access Zone’ and

‘Radio Frequency Worker Access

Zones’ replaced by terms

‘Exclusion Zone – Red’ and

‘Exclusion Zone – Yellow’

plus

References to ‘Site Management

Book’ replaced by references to

‘EME Guide’


Where to from here?

30 /

• Revision 5.3 of the PSSR comes into effect on 28 August 2017

and can be downloaded from transgrid.com.au




http://thewire/dc/PSSR/SitePages/PSSRv51.aspx

Power Safety System Rules: Revisions effective in version 5.3

Engineering